CVE-2022-40318

Description

An issue was discovered in bgpd in FRRouting (FRR) through 8.4. By crafting a BGP OPEN message with an option of type 0xff (Extended Length from RFC 9072), attackers may cause a denial of service (assertion failure and daemon restart, or out-of-bounds read). This is possible because of inconsistent boundary checks that do not account for reading 3 bytes (instead of 2) in this 0xff case. NOTE: this behavior occurs in bgp_open_option_parse in the bgp_open.c file, a different location (with a different attack vector) relative to CVE-2022-40302.

Category

6.5
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.12%
Vendor Advisory debian.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/FRRouting/frr/releases third party advisory
https://www.debian.org/security/2023/dsa-5495 third party advisory vendor advisory
https://lists.debian.org/debian-lts-announce/2023/09/msg00020.html third party advisory mailing list

Frequently Asked Questions

What is the severity of CVE-2022-40318?
CVE-2022-40318 has been scored as a medium severity vulnerability.
How to fix CVE-2022-40318?
To fix CVE-2022-40318, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-40318 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2022-40318 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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